President Xi Jinping (second left), Brazilian President Luiz Inacio Lula da Silva (left), South African President Cyril Ramaphosa (center), Indian Prime Minister Narendra Modi (second right) and Russian Foreign Minister Sergey Lavrov pose for a group photo during the 15th BRICS Summit at the Sandton Convention Centre in Johannesburg, South Africa, on Wednesday. GIANLUIGI GUERCIA/AP

　　President Xi Jinping delivers a speech during the 15th BRICS Summit in Johannesburg on Wednesday. The speech was titled "Seeking Development Through Solidarity and Cooperation and Shouldering Our Responsibility for Peace". LI XUEREN/XINHUA

　　President Xi Jinping meets with South African President Cyril Ramaphosa at the Union Buildings in Pretoria on Tuesday during his state visit to South Africa from Tuesday to Thursday. THEMBA HADEBE/AP

　　President Xi Jinping attends a welcoming ceremony hosted by South African President Cyril Ramaphosa at the square of the Union Buildings, the seat of the South African government, in Pretoria on Tuesday. This was Xi's fourth state visit to South Africa as Chinese president. YIN BOGU/XINHUA

　　President Xi Jinping and South African President Cyril Ramaphosa interact with reporters on Tuesday after their talks at the Union Buildings in Pretoria. The two leaders witnessed the signing of a series of bilateral cooperation agreements. LI XUEREN/XINHUA